Determination of diffusion coefficients from experimental moisture concentration profiles in clay

A.A.J. Ketelaars, O. Lauf, W.J. Coumans, P.J.A.M. Kerkhof

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

In order to measure moisture-concn. profiles, a method based on neutron transmission was applied. Drying curves and diffusion coeffs. were calcd. from these profiles. The diffusion coeffs. appeared to be similar to the diffusion coeffs. detd. by comparing the numerical soln. of the diffusion equation with exptl. drying curves. The accuracy of both methods is about the same. Because the moisture concn. profiles are flat at high moisture concns., the accuracy of the calcd. diffusion coeffs. at high moisture concns. is not as high as is obtained at lower moisture concns. The neutron-transmission-based method is reproducible and has the advantage that it is not necessary to assume a certain relation between the diffusion coeff. and the moisture content. [on SciFinder (R)]
Original languageEnglish
Title of host publicationDrying '92 : Proceedings of the 8th International Drying Symposium (IDS '92), Montreal, Quebec, Canada
Place of PublicationAmsterdam
PublisherElsevier
Pages345-352
ISBN (Print)0-444-89393-8
Publication statusPublished - 1992
Event8th International Drying Symposium (IDS '92), August 2-5,1992, Montreal, Quebec, Canada - Montreal, Canada
Duration: 2 Aug 19925 Aug 1992

Conference

Conference8th International Drying Symposium (IDS '92), August 2-5,1992, Montreal, Quebec, Canada
CountryCanada
CityMontreal
Period2/08/925/08/92
Other8th International Drying Symposium (IDS '92)Montreal, Quebec, Canada, August 2-5,1992

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Ketelaars, A. A. J., Lauf, O., Coumans, W. J., & Kerkhof, P. J. A. M. (1992). Determination of diffusion coefficients from experimental moisture concentration profiles in clay. In Drying '92 : Proceedings of the 8th International Drying Symposium (IDS '92), Montreal, Quebec, Canada (pp. 345-352). Amsterdam: Elsevier.